Quadrilaterals

By Dara L. Iwankovitsch

What is a Quadrilateral?

A four sided figure Because it has four sides, a quadrilateral also has

four angles The angles will all add up to 360°

There are five most well known types of quadrilaterals. They are: Rhombus Parallelogram Rectangle Square Trapezoid

What is a Rhombus? Has four equal

sides Sometimes called

a diamond

What is a Parallelogram? Has two sets of

parallel sides Opposite sides are

parallel and equal Opposite angles

are equal

What is a Rectangle? Rectangles are

special parallelograms Two sets of parallel

sides Opposite sides are

parallel and equal All angles are

equal Each angle is 90°

What is a Square? A square is a

special rectangle Opposite sides are

parallel All angles are

equal Each angle is 90°

All sides are equal

What is a Trapezoid? One set of parallel

sides

Additional Online Resources Math.com : Quadrilaterals

This site will tell you some more surface and in depth information about quadrilaterals. Start with the “First Glance” step and progress through the rest of the steps. The information in Examples and Workout require a little more in depth thinking.

Primary Resources: Shape Reveal To use this site please click on the “Shape Reveal”

Link in the list of online activities. From there you may select either the “quadrilaterals” or the “quadrilaterals with rotation” option. Hit the arrow button to begin. You will see different types of quadrilaterals.

Additional PDF Resources

Quadrilateral Worksheet Answers to Quadrilateral Workshee

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